x402.ottoai.services/yield-alpha
1.Catalog declaration
| Resource URL | https://x402.ottoai.services/yield-alpha |
| Source | cdp_bazaar |
| Declared method | GET |
| Network | eip155:8453 |
| Receiving address | 0x0e84ddedaae6a779c462c22a59f301ec31b6b808 |
| Declared price (base units) | 2000 |
| Catalog status | active |
| First seen / last seen | 2026-08-14 08:39 UTC / 2026-09-29 01:02 UTC |
| Catalog-reported calls / payers (30d) | 23 / 21 |
2.Probe history
| Probed at | Method | Verdict | HTTP | Latency | Reason |
|---|---|---|---|---|---|
| 2026-09-29 13:40 UTC | GET | pass | 402 | 2084 ms | — |
| 2026-09-28 16:40 UTC | GET | pass | 402 | 274 ms | — |
| 2026-09-27 22:40 UTC | GET | pass | 402 | 408 ms | — |
| 2026-09-27 04:40 UTC | GET | pass | 402 | 124 ms | — |
| 2026-09-26 13:40 UTC | GET | pass | 402 | 558 ms | — |
| 2026-09-25 16:40 UTC | GET | pass | 402 | 356 ms | — |
| 2026-09-24 22:40 UTC | GET | pass | 402 | 147 ms | — |
| 2026-09-24 04:40 UTC | GET | pass | 402 | 164 ms | — |
| 2026-09-23 13:40 UTC | GET | pass | 402 | 483 ms | — |
| 2026-09-22 22:40 UTC | GET | pass | 402 | 433 ms | — |
| 2026-09-22 04:40 UTC | GET | pass | 402 | 362 ms | — |
| 2026-09-21 13:40 UTC | GET | pass | 402 | 431 ms | — |
| 2026-09-20 16:40 UTC | GET | pass | 402 | 184 ms | — |
| 2026-09-19 22:40 UTC | GET | pass | 402 | 305 ms | — |
| 2026-09-19 04:40 UTC | GET | pass | 402 | 110 ms | — |
| 2026-09-18 13:40 UTC | GET | pass | 402 | 259 ms | — |
| 2026-09-17 22:40 UTC | GET | pass | 402 | 240 ms | — |
| 2026-09-17 04:40 UTC | GET | pass | 402 | 170 ms | — |
| 2026-09-16 13:40 UTC | GET | pass | 402 | 710 ms | — |
| 2026-09-15 16:40 UTC | GET | pass | 402 | 1462 ms | — |
| 2026-09-14 22:40 UTC | GET | pass | 402 | 492 ms | — |
| 2026-09-14 13:40 UTC | GET | pass | 402 | 662 ms | — |
| 2026-09-13 16:40 UTC | GET | pass | 402 | 111 ms | — |
| 2026-09-13 04:40 UTC | GET | pass | 402 | 230 ms | — |
| 2026-09-12 13:40 UTC | GET | pass | 402 | 142 ms | — |
| 2026-09-11 22:40 UTC | GET | pass | 402 | 1526 ms | — |
| 2026-09-11 04:40 UTC | GET | pass | 402 | 307 ms | — |
| 2026-09-10 17:40 UTC | GET | pass | 402 | 238 ms | — |
| 2026-09-10 05:40 UTC | GET | pass | 402 | 303 ms | — |
| 2026-09-09 17:40 UTC | GET | pass | 402 | 266 ms | — |
3.L1 — real purchases
3 of 3 paid attempts settled on-chain, and 3 of those also returned a 2xx response (delivered). Each settled row carries its on-chain transaction hash, and that transaction is the evidence. On this page a receipt means the seller's own settlement receipt (PAYMENT-RESPONSE); a settled row can have none (see “tx from our index”). A settled row reads as nonce-bound when the on-chain re-read also matched the one-time signature nonce we generated for that purchase, and amount + payee when it matched amount, payee, asset and chain with no nonce on record — the binding shipped on 2026-09-04, so earlier rows carry the weaker evidence and keep their label rather than being demoted (methodology). settled is the transfer we confirmed on-chain; delivered is the response arriving. A settled row whose paid request answered 5xx counts as settled and not as delivered — definitions.
Terms in this table
settled (nonce-bound)- vet402 confirmed the USDC transfer on-chain, and the on-chain re-read also matched the one-time nonce vet402 signed for that purchase.
L2 match- the response had the fields the listing's output schema declares.
Whose side- the same words as the seller page: seller's side only after failures on two different days (UTC), marked “under re-check”; vet402's side; or not sorted (the rules).
| Attempted at | Result | HTTP | On-chain tx | Latency |
|---|---|---|---|---|
| 09-17 00:012026-09-17 00:01 UTC | settled (nonce-bound) | 200 | 0x2172d812…9001 | 1576 ms |
| 2000 units (≈ $0.002 USDC) · L2 matchWhose side: no failure (delivered) | ||||
| 09-10 19:002026-09-10 19:00 UTC | settled (nonce-bound) | 200 | 0x4a6ff5da…8844 | 1713 ms |
| 2000 units (≈ $0.002 USDC) · L2 matchWhose side: no failure (delivered) | ||||
| 09-04 12:072026-09-04 12:07 UTC | settled (nonce-bound) | 200 | 0xb42d417b…1969 | 1636 ms |
| 2000 units (≈ $0.002 USDC) · L2 matchWhose side: no failure (delivered) | ||||
Embed this record
Run this endpoint? Show the settle-through record vet402 measured — the badge reads 3/3 settled · 3 delivered and updates as the record grows. It carries the host it is about and the date it was last measured, so a saved copy cannot pass itself off as current. It states a measurement, not a rating.
[](https://vet402.com/observatory/e/5558d148-8b6f-4f07-b158-d5f85ff9316a)4.Catalog listing events
No listing changes observed.
unverified is not a failure; a fail is published only after two consecutive failing probes. Definitions: methodology.
5.Dispute this record
Think a measurement above is wrong? Say which probe or purchase and what you observed instead. One person reads it and replies. The record is never deleted on dispute: if it was wrong, the correction is published with the same weight; if it was right, it stands. Operators who control the receiving address can also sign a dispute via POST /api/v1/observatory/disputes (API reference), which re-measures through the normal publication gate.